Hi! On Tue, Feb 25, 2020 at 04:53:17PM +0000, GT wrote: > ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐ > On Sunday, February 23, 2020 11:45 AM, Bill Schmidt <wschm...@linux.ibm.com> > wrote: > > As I just wrote on gcc-patches, we should disable libmvec for powerpc64. > > The vector ABI as written isn't compatible with ELFv1. We would need > > a modified ABI that doesn't allow homogeneous aggregates of vectors to > > be returned in registers in order to support ELFv1. I do not believe > > that is worth pursuing until and unless there is demand for it (which > > I do not expect). > > Are we all agreed that the POWER Vector Function ABI will be implemented only > for powerpc64le?
I do not agree. I don't agree we should have a new ABI, and an API (which this *is* as far as I can tell) works fine on *any* ABI. Homogeneous aggregates has nothing to do with anything either. It is fine to only *support* powerpc64le-linux, sure. But don't fragment the implementation, it only hurts, never helps -- we will end up having to support ten or twenty different compilers, instead of one compiler with a few (mostly) orthogonal variations. And yes, we should also test everything everywhere, whenever reasonable. For the glibc side I have no opinion. Segher
